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5. Вага бурильної колони утримується упорним
підшипником, що знаходиться в корпусі, який змащений
мастилом, і все це підвішується до гаку і до штропа вертлюга.

Exercise 3. Insert the missed words
1. The swivel stem (or body) is attached to the upper end of
the _____ and they rotate together.
2. The body is usually made of _____ casting.
3. Manufacturers have constructed the rotary swivel to
permit complete overhauling at all points of wear on the _____
floor.
4. If ______ at the wash pipe and similar connections persist
it is necessary to check for faulty shale shaker screens, grit-filled
mud pits and lumpy mud mixtures.
5. There are three purposes of the swivel: to _____ the drill
stem, to permit free rotation and to serve as the passageway for
drilling fluid into the drill column.

Exercise 4. Give Ukrainian equivalents to the following
words
1. Packing cartridge
2. Mud pit
3. Drilling fluid
4. Extreme pressure lubricant
5. Overall dimension
6. Lower bearing
7. Pulsating action
8. Suspension equipment
9. Needle roller bearing
10. Overburden

Exercise 5. Answer the questions
1. What is the purpose of the swivel?
2. What are the principle parts of the swivel?

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